Alasdair Allan aallan

Scientist, Author, Hacker, Tinkerer, Maker and Journalist. Used to be in charge of writing things down at Raspberry Pi.

aallan / tensorflow_example.py

Last active February 28, 2022 14:59

Simple TensorFlow Lite and Picamera2 example

	#!/usr/bin/python3

	import tflite_runtime.interpreter as tflite

	import sys
	import os
	import argparse

	import cv2
	import numpy as np

aallan / widget.js

Created December 5, 2019 13:34

Additional code to add widgets into a Bangle.js application when using the Web IDE. Needs to be included at the top of your code.

	var WIDGETPOS={tl:32,tr:g.getWidth()-32,bl:32,br:g.getWidth()-32};
	var WIDGETS={};
	function drawWidgets() { for (var w of WIDGETS) w.draw(); }
	require("Storage").list().filter(a=>a[0]=='=').forEach(widget=>eval(require("Storage").read(widget)));
	setTimeout(drawWidgets,100);

aallan / simpleclock.js

Last active December 5, 2019 12:10

A simple clock app for the Bangle.js JavaScript-powered smart watch.

	// drawWidgets() is added by bootloader.js when loading a clock app, but when you upload via the IDE it just
	// resets the watch and skips out running bootloader.js completely. So add the relevant code from the bootloader.
	var WIDGETPOS={tl:32,tr:g.getWidth()-32,bl:32,br:g.getWidth()-32};
	var WIDGETS={};
	function drawWidgets() { for (var w of WIDGETS) w.draw(); }

	require("Storage").list().filter(a=>a[0]=='=').forEach(
	widget=>eval(require("Storage").read(widget)));
	setTimeout(drawWidgets,100);

aallan / creditCard.swift

Created October 29, 2019 21:31

Luhn algorithm implemented in Swift

	let creditCardNumbers = [
	4964149475059987,
	4898620401632387,
	4393958570449195,
	4751492711160905,
	4437340772573099,
	]

	let valid = creditCardNumbers.filter
	{ number in

aallan / analog.ino

Last active September 2, 2019 17:15

Testing the analogRead() function on the SAMD21 micro-controller

aallan / cooling.py

Last active November 5, 2020 11:29

Toggle a cooling fan on and off to keep the Raspberry Pi between 70 and 75C

	#!/usr/bin/env python3

	import sys
	import os
	import time
	import vcgencmd as vc
	from gpiozero import OutputDevice

	def main():
	fan = OutputDevice(18)

aallan / measure.py

Last active November 5, 2020 11:29

Measuring the CPU temperature and clock speed of the Raspberry Pi once a second and logging it to a file.

aallan / benchmark_xnor.py

Created May 23, 2019 14:50

Benchmarking script for the Xnor Platform SDK on the Raspberry Pi

	#!/usr/bin/env python3

	import sys
	import os
	import logging as log
	import argparse
	import subprocess
	from timeit import default_timer as timer

	from PIL import Image

aallan / benchmark_tf_lite.py

Created May 8, 2019 11:06

benchmarking script for TensorFlow Lite on the Raspberry Pi

	#!/usr/bin/env python3

	import tensorflow as tf

	import sys
	import os
	import logging as log
	import argparse
	import subprocess
	from timeit import default_timer as timer

aallan / benchmark_edgetpu.py

Last active August 28, 2020 08:18

Benchmarking script for TensorFlow Lite on EdgeTPU-based hardware

	#!/usr/bin/env python3

	import platform
	PLATFORM = platform.system().lower()
	GOOGLE = 'edge_tpu'
	INTEL = 'ncs2'
	NVIDIA = 'jetson_nano'
	PI = 'raspberry_pi'
	IS_LINUX = (PLATFORM == 'linux')